Patents by Inventor Lauri Tapani Marttala

Lauri Tapani Marttala has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for the evaporation of liquids
    Patent number: 4076576
    Abstract: Liquids which, when dilute, tend to froth during mixing or boiling are evaporated in an evaporator by feeding the entire liquid quantity to be evaporated into the evaporator, bringing only part of it in indirect heat exchange contact with a hot medium to concentrate the liquid, recycling part of the concentrated liquid to the heat exchange to prevent frothing of the liquid to be evaporated, and withdrawing the vaporized portion and the concentrated liquid from the evaporator.
    Type: Grant
    Filed: December 29, 1975
    Date of Patent: February 28, 1978
    Assignee: A. Ahlstrom Osakeyhtio
    Inventor: Lauri Tapani Marttala